Churn



, M. n. GIBSON.

CHURN.

APPumoN mio SEPT` 2a. 19m.

Patented May 9, 1922.

wmmmmmmm atar einem,

CH'URN.

Speccation of Letters Patent.

rai-.earns 'May e, ieee,

Application led September 23, 1918.` Serial No. 255,245.

To all 'whom t may concern.'

`lie it known that l, MARsHALL D. GIBSON, a citizen of the United States, residing in the city of vWebster Groves, in the county of St. Louis and State .of Missouri, have invented anew and useful lmprovementin Churns, of which the following is a specification.

"his invention relates to churns, and has reference more particularly to a novel dasher or agitator construction therefor. It has for its objects to produce a simple, inexpensive and efficient device of this character for use as a kitchen utensil in churning, mixing and whipping cream, eggs, glucose, and other materials or substances; and to attain certain advantages as will hereinafter more fully appear.

The invention consists essentially; in a novel combination of vacuum cup and beaters with means for imparting a rapid reciprocation and simultaneous rotation thereof; and in the parts and combinations and arrangements of parts hereinafter described and claimed.

In the accompanying drawing illustrating an approved embodiment of the invention,-

Figure 1 is a view, partly in vertical section, showing the complete device;

Figure 2 is a top view of the closure for the container detached;

Figure 3 is an inverted end view of the vacuum cup;

Figure 4C is a fragmentary view, partly in section, showing a modification of the -vacuum cup; and

Figure 5 is an inverted end view of the vacuum cup, showing a modified form of beater.

Referring now to the drawing, the numeral l designates the receptacle or container having a removable closure 2,'which may be of any desirable or approved kind or character, but is shown as an ordinary commercial glass jar having a screw-cap and commonly known as a Mason jar,

The dasher or agitator comprises a vacuum cup 3, which, preferably, is either spherical or conoidal, as respectively shown in Figures l and 4.

Around the edge of the cup is a series of blades or wings 4 which are preferably made integral therewith. As shown, they have reduced neck portions 5 which are twisted to present the widened end portions inclinedly (see Figure 3) so that the substance being acted upon in the container is thrown inward, towards the center, when the cup is rotated in the one direction, and outward in the other direction. These blades are preferably given an ogee or reverse curvature, as at 6, 7, as shown in Figure 3, or they may be straight as shown in Figure Also, it is preferable to have the blades extend well inward close to the center of the cup, but a relatively shorter distance outward from the circumference thereof.

Owing to the peculiar combination of vacuum cup and blades a rapid and thorough aerationv and mixing of the substance is accomplished. On the down stroke of the dasher air is carried forcibly into the mass with compression within the cup and released as the cup is moved upward, while at the ysame time the agitator vblades or beaters are acting to stir the mass beneath and about the cup. `Thereforein addition to the aerating effect due to the endwise reciprocation of 'the cup, a complete agitation is attained by imparting a simultaneous rotation. first in the one direction and then oppositely, during each reciprocation; the result being to quickly lighten and froth the mass.

As a simple means of actuation, the cup is fixed on the end of a screw 8 which works through an aperture 10 in the cap 2 and has a handle 9 swiveled on its outer end. As shown, the screw comprises a flat bar which is twisted regularly throughout its length to provide the necessary convolutions or iiights, and the aperture 10 through which the screw works is in the form of a slot. Hence, by grasping the handle and forcing the screw endwise through the slot, the simultaneous endwise reciprocation and rotation of the dasher is brought about.

The slot 10 may be provided in the cap proper, but to utilize the ordinary commercial caps which are sometimes of relatively soft metal and will not withstand the wear of the screw thereon, an adapter in the form of a supplemental, relatively hard metal plate l1 may be attached thereto. As shown in Figures l and 2, this plate is provided with marginal lugs or prongs l2 which are projected through corresponding apertures provided therefor and rebent over upon the outer face of the cap, the slot 10 being located in the center of the plate and coinciding with a circular aperture 18 in the cap of sufficient .size to make clearance for the screw.

As hereinbefore stated, the invention comprehends broadly the combination of vacuum cup and beaters. bviously, therefore, the device admits of considerable modiiication Without departing from the spirit of the invention, and is not limited to the specific construction and arrangement shown in the drawing.

lhat is claimed is:

l.' In a device of the character described, a dasher comprising an inverted cup having an unobstructed vinterior chamber and a series of blades depending from the edge thereof.

2. ln a device of the character described, a dasher comprising an inverted cup having agitator blades depending from and extending across the lmargin thereof and in inclined relation to the perimeter.

3. in a device of the character described, a dasher comprising an inverted cup having a series of marginal blades disposed inclinedly in a circular arrangement and extending in proximity to the axis of the cup.

4.- ln a device of the character described, a dasher comprising an inverted cup having a series of blades disposed inclinedly across the edge thereof, said blades extending at one side beyond the circumference of the cup and at their other side in proximity to the axis of the cup.

5. ln a device of the character described, a dashei1 comprising an inverted cup having a series of blades depending from and extending on opposite sides of the margin thereof and disposed inclinedly in circular arrangement, said blades being formed With reversely curved inner and outer portions.

Signed this 17th day of September, 1918, at St. Louis, Missouri.

MARSHALL D. GIBSON. 

